Korea Institute of Geoscience and Mineral Resources

Taegong Ryu

Kang-Sup Chung

Hye-Jin Hong

Byoung-Gyu Kim

In-Su Park

Jungho Ryu

Jae-chun Lee

Provided is a recovery method of useful resources in seawater and brine, and more particularly, a recovery method of useful resources in seawater and brine capable of improving adsorption efficiency and recovery efficiency of trace amounts of useful resources such as strontium, lithium, boron, or the like, present in brine at low cost by using a magnetic adsorbent composite and a solid-liquid separation process which uses magnetic force.

Recovery method of useful resources in seawater and brine

Provided is an underwater holding-type lithium recovering apparatusincluding: an underwater holderinstalled on an offshore sea bed; a lithium adsorbentheld in the underwater holderand adsorbing lithium ions contained in seawater; a moving shipinstalled with a cleaning tankcleaning the lithium adsorbenttransferred from the underwater holderand a desorbing tankdesorbing lithium ions adsorbed in the lithium adsorbenttransferred from the cleaning tank, and moved to a coastline when lithium ions of a reference value or more are filled in the desorbing tank; and a transfer pumptransferring lithium ions filled in the desorbing tankto a reservoirinstalled at the coastline.

Underwater holding-type lithium recovering apparatus and method thererof

Provided are a lithium adsorbent prepared using an aerosol deposition method, including (a) synthesizing lithium manganese oxide powder, and (b) coating the lithium manganese oxide powder on a surface of a substrate by the aerosol deposition method, and a method of preparing the same. The lithium adsorbent is characterized in that the lithium manganese oxide powder may be directly coated on various substrates using the aerosol deposition method, thereby greatly reducing a decrease of a lithium recovery rate even after a long time has lapsed. Further, the lithium adsorbent having a large surface area prepared by the preparation method of the present invention is characterized by being easily handled, being selectively reacted with lithium ions, having a larger adsorption area, being physically and chemically stable, and being used reversibly.

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Daejeon, South Korea

Taegong Ryu